Without the support of enthusiastic and caring volunteers producing our races would not be possible. Volunteers of all ages and abilities help with setup, check-in, aid stations, course marshaling, timing, and post-race food, awards, shirts, and timing.

Ordnance 100K Aid Station VolunteersVolunteering is a fun, novel way to experience races, play in the outdoors, and spend time with friendly people.

All volunteers receive a free race T-shirt, free food, and the ability to earn credit toward a future Inside Trail Racing event, commensurate to the amount of time worked. Five hours of assisting an event results in a free race credit or Inside Trail merchandise. For sweepers, you’ll receive one credit for every 10 miles you sweep. Sweeping is typically a one person job, so if you have two people sweep 10 miles, each person will receive 1/2 credit. Volunteer credits last 1 calendar year from the event you volunteered.

Anyone can sign up to volunteer. Once you complete the online form, we will send you a confirmation email informing you that we have received the submission. The week before the race (usually the Monday or Tuesday prior to race day), we will email you the volunteer document with your volunteer assignment, meeting time/location, directions, and other details.

Please note that we depend on each and every person who signs up to volunteer! Losing just one volunteer has a deep impact on the race and other volunteers’ assignments, so please do not submit a form to help us out if you unsure if you will be able to make it.

Thank you for your support!

*Note – The following races require 2 credits to register: Ordnance 100K, and Marin Ultra Challenge 50 Mile & 50K.

  • "Early Morning" shifts typically align with setup on race morning. This often means a 6:00 AM start time, but there are some races which begin even earlier.